AntiQuadra is an freeware implementation of a very unusual form of Patience. Its features include smooth animation, infinite Undo/Redo, 'X-Ray' vision, a tiny 'DA' mode, a large number of Preferences and a comprehensive Balloon Help system.
New features for version 2 include colour cards and native PowerPC code as a fat binary application, and it also works cleanly from CD-ROMs now.
AntiQuadra 2.0.2 is suitable for all Macs from the SE/30 right up to the latest PowerMacs. It is compatible with all versions of System 7.
Version 2.0.2 fixes a minor bug and updates the documentation.